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Question

A number when divided by 247 leaves a remainder 91. What will be the remainder if the number is divided by 19?

A
12
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B
17
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C
15
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D
18
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Solution

The correct option is C 15

Conventional Solution: -Let the number be N

N = 247K + 91

247 is divisible by 19.

If N is divide by 19. Remainder will be 91 – 76 = 15.

Alternate solution :

247 is divisible by 19. The first number , N would be 247+91 = 338. 338 when divided by 19 gives remainder 15.


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